Ultrasonic endoscope

Abstract

The invention discloses an ultrasonic endoscope. The ultrasonic endoscope comprises an insertion part, an ultrasonic assembly and a cable, wherein the insertion part comprises a shell, a shrinking barrel and a fixing barrel, wherein a connecting hole is formed in the tail end of the shell; the shrinking barrel is barrel-shaped; the outer diameter of the shrinking barrel is smaller than the diameter of the connecting hole; at least one slit which is formed in the length direction is formed in a side wall of the shrinking barrel; the shrinking barrel is divided by the slits to form at least one arc-shaped shrinking plate; the middle of one end of each shrinking plate is connected to the inner wall of the connecting hole; the fixing barrel is barrel-shaped and covers the peripheral surface of the shrinking barrel; the ultrasonic assembly is placed in the shell; one end of the cable is connected with the ultrasonic assembly; and the other end of the cable penetrates through the shrinking barrel and extends outwards. The connecting hole is formed in the shell and is connected with the shrinking barrel; because the inner diameter of the connecting hole is greater than the outer diameter of the shrinking barrel, an optional position of the shrinking barrel deforms elastically in the radial direction, limitation of the shell to the shrinking barrel is avoided, a gap does not exist between the shrinking barrel and the cable, and therefore, the diameter of the cable can be reduced to a greatest extent.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an ultrasonic endoscope. Background technique [0002] Ultrasonic endoscope is a kind of endoscopic equipment that needs to be inserted into the human body cavity, so it needs to be miniaturized and the cable diameter should be reduced in practical application. The Chinese patent application with the publication number CN 106535775A discloses an ultrasonic endoscope, which allows the penetration part to undergo a certain degree of elastic deformation along its radial direction by providing a slit on the penetration part at the top side of the insertion part, which can ensure No gaps or minimal gaps between the penetration and the cable. However, since one end of the through portion is directly connected to the shell portion of the insertion portion, no matter whether the through portion and the shell portion are integrally formed, or the through portion is fixedly co...

AI Technical Summary

Problems solved by technology

However, since one end of the through portion is directly connected to the shell portion of the insertion portion, no matter whether the through portion and the shell portion are integrally formed, or the through portion is fixedly connected to the shell portion, only one end of the through portion away from the shell portion can produce elastic deformation. , that is, the penetration part only achieves seamless or minimal gap between its end and the cable, while there is still a gap between the penetration part and the cable at the end of the penetration part opposite to the shell part, and the connection between the penetration part and the shell part is restricted Next, the degree of elastic deformation of the end of the penetration part away from the shell part is restricted, so the degree of seamless or minimal gap between the penetration part and the cable is limited

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